Improvement in devices for stopping the shuttle in power-looms



UNITED STATES PATENT nmol-3.

DAVID S. ESTEN, OF HINSDALE, MASSACHUSETTS.

IMPROVEMENT lN DEVICES FOR STOPPING THE SHUTTLE IN POWER-LOOMS. i

Specification forming part of Letters Patent No. 39,803, dated September8, 1863.

To all whom it may concern:

Be it known that I, DAVID S. ESTEN, of Hinsdale, in the county ofBerkshire and State of Massachusetts, have invented a new and usefulImprovement for Stopping the Shuttle in Power-Looms and I do herebydeclare that the followin gis afull, clear, and eX- act description ofthe same, reference being had to the accompanying drawings, forming partof this specification, in which- Figure l is a vertical section of aportion ot the lay and shuttlemotion and of my improvement, parallelwith the raceway, illusirating the application of my invention to thepicker-stati. Fig. 2 is a vertical section ot' the same at right anglesto Fig. 1. Fig. 3 is a bottom view of that portion which constitues theprincipal fea-ture of my invention.

Similar letters of reference indicate corresponding parts in the severaliigures.

This invention consists in an improved mode of applying a spring tooperate upon the picker-stati' for the purpose of checking or stoppingthe shuttle in the shuttle-box, whereby I am enabled to use alighterbinderspring and to obviate the necessity of producing so much frictionupon the shuttle as it enters the box. Y

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

A is the race-board of the lay; B, one of the swords, and C theshuttle-box.

` D is the pricker-staff, which may be operated in the usual manner tothrow the shuttle.

E and F are the two cylinders with toothed edges, tting together likethe two portions of a rag-wheel clutch. The cylinder E is made in thesame piece with plate E', which is secured to the front partof thebottom of the shuttle-box andis stationary. The cylinder F, is iitted toturn on a pin, a, which is firmly secured in the cylinder E, and whichis concentric with both cylinders, and upon this pin there is coiledoutside of the cylinder F between the said cylinder and a stop, d, onthe end of the pin a spiral spring, b, which presses the said cylinder Ftoward the cylinder E, and so tends to prevent the cylinder F fromturning in the only direction in which it is permitted to turn from itsnormal position by its wedge-like teeth c c, on the two cylinders-viz.,in the direction of the arrow shown in Fig. 1. The stop d may consist ofa nut and be tted to a screw-thread on the pin c for the purpose ofadjusting the pressure of the spring.

e is a strap, of leather or other material, which is wound partly aroundthe cylinder F, and one end of which is secured to the said cylinderbyahook, f, andtheother'endsecured to a hooked rod, g, which ispermitted to slide horizontally in guides h h, secured to the bottom ofthe lay near the end thereof. The hook of this rod is wide enough and isso situated as to allow the picker-statt` to play freely within it tothrow the shuttle.

The operation of the check is as follows: When the shuttle passes intothe box, it strilies the picker-staff and drives it back, and the staff,coming into contact with the bend of the hook of the rod g, presses backthe said hook with it toward the end of the lay, and in so doing unwindsthe strap from the cylinder F and turns the said cylinder in thedirection of the arrow shown in Fig. 1. By this action of the cylinder Fthe inclined surfaces of its wedge-like teeth, acting against thecorresponding surfaces of the teeth on the cylinder E, force it backfrom the latter cylinder and produce the compression of the spring b,and the resistance offered to the turning of the cylinder F increaseswith the compression of the spring till itbecomes suf- .iicient to stopthe said cylinder, and so causes the hook to arrest the picker-staff andthe shuttle. The spring then gradually reacts upon the cylinder F andcauses it to turn back in the opposite direction to the arrow till it isstopped by the teeth on the cylinder E, and the strap e is thus wound upagain and caused to draw the picker-staff toward the center of the loomas far as permitted by the guides h h, which serve as stops to the hookg, and this is done so gradually as not to throw the shuttle away fromthe staff, in contact with which itreinains till the staff is operatedby the picker-motion to throw it across the loom.

The invention is to be applied at each sidel of the loom, but I havethought it sufficient Whole applied and arranged to operated suhfor itsillustration to show its application to stantially as and for thepurpose herein specione side.

What I claim as my invention, and desire to secure by Letters Patent7is- The spring b, applied to act upon the piekerstaff through the mediumof the two toothed cylinders E F, strap e, and hooked rod g, the

DAVID S. ESTEN.

Witnesses DAVID KENNEY, ELISHA H. PARISH.

